Ashcroft L, G Service Manual

Page 1
G & L-Series Multifunction Temperature Switches
G-Series
L
FEATURES
• Single setpoint, fixed deadband
• Single setpoint, adjustable deadband
• Dual setpoint
Thermowells
Thermowells must be used on any application where the stem of the temper­ature switch may be exposed to pres­sure, corrosive fluids or high velocity. Additionally, the use of a thermowell per-
its instrument interchange or calibration
Ashcroft Inc. supplies highly reliable
®
Ashcroft
switches and controls for indus­trial and process applications. We begin with rock-solid designs, matching the most appropriate technology with the safety and reliability requirements of the applications. The materials of construction are specified to Ashcroft’s exacting stan­dards, and product is built to last in the toughest applications. Our modern, responsive manufacturing facility is sup­ported by an extensive network of stock­ing distributors and factory sales offices located in virtually every part of the world.
Special application assistance is always just a telephone call away.
The Ashcroft G & L-Series temper-
ature switch line is designed to satis-
fy most switch requirements. Materials of construction have been selected for long life. A wide variety of precision switch elements are available to meet every application requirement, including hermet-
m check without disturbing or closing down the process.
Ashcroft temperature switches have bulb diameters to match thermowells. The bulbs have a sensitive portion length of 2
1
with 2
2˝ “U” dimensioned thermowells or
3
8˝ nominal bore
1
4˝ which can be used
longer. For maximum accuracy, a ther­mowell “U” dimension should be selected to permit complete immersion of the sen­sitive portion plus 1˝ when measuring the temperature of liquids; an extra 3˝ should be allowed when measuring the tempera­ture of gases.
Thermowell bushings should be used with remote mount temperature switches. We recommend the standard 3˝ bulb and code 69 Series bushings for use with any ther­mo-well “U” dimension. A split rubber grom­met allows easy installation and “S” dimen­sion adjustment.
ically sealed contacts for added reliability and safety. The thermal systems we use have been proven in more than 20 years of service in the world’s plants and mills. Special designs are available for more stringent requirements. Simplicity and ease of use are stressed to improve relia­bility of the installation.
Applications include: pumps, compres-
sors, washers, filters, degreasers, evap-
ies
er
-S
orators, recovery systems, food process­ing, ground support equipment, reverse osmosis systems, heat exchangers, hydraulic systems, lubrication systems, marine equipment, textile machinery, heating and air conditioning equipment.
BULLETIN SWGL-1-T
All specifications are subject to chang e without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2014 11/14
Ashcroft Inc., 250 Ea st Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.co m • www.ashcroft.com
Page 2
G & L-Series Multifunction Temperature Switches
Temperature Switches
G- and L-Series temperature switches feature a AMA Class II vapor pressure thermal system.
S This system provides quick, accurate response to process temperature changes with negligible
mbient temperature effects. This is inherent in
a the design due to the precise relation-ship between temperature and pressure according to
the vapor pressure laws. A wide selection of sensing bulb and armored capillary lengths are available. The vapor pressure system design fea­tures small bulb sizes, making installation easy and cost-effective.
All models feature ±1 percent of span
setpoint repeatability with very high over-
temperature ratings.
These standard designs perform well in appli-
ations where shock and vibration could be a
c problem and should be used with Ashcroft ther­mowells for bulb protection and ease of installa-
ion and maintenance.
t
TEMPERATURE RANGE SELECTION
Approximate Deadband
°F
–40 to 60 –40 to16 400 18-90 4.0-10 9.0-18 1.5-3 2-5 4-10 9.0-18 1.5-3 2-5 0 to 100 –20 to 40 400 30-90 5.0-15 10-30 1.5-5 3-7 5-15 10-30 1.5-4.5 3-7 75 to 205 20 to 95 400 34-120 6.0-18 10-34 3-5.5 3-8 6-18 10-34 3-5.5 3-8
150 to 260 65 to125 400 25-100 3-13 9.0-25 1.5-4 3-7 3-13 9.0-25 1.5-4 3-7
235 to 375 110 to 190 500 35-130 6-19 10-35 2-5.5 3-8 6-17 10-35 2-5.5 3-8
350 to 525
500 to 750
NOTES:
1. Switches may generally be set between 15% and 100% of nominal range on increasing or decreasing temperature. Consult factory for applications where setpoints must be lower.
2. All deadbands are given in °F.
Nominal Range
(5)
175 to 275 700 40-165 5-27 15-40 3-7 3.5-11 5-27 15-40 3-7 3.5-11
(5)(6)
260 to 400 900 50-200 20-36 36-60 5-10 6-21 20-36 36-60 5-10 6-21
(1)
°C °F J, H G J, H K, F P GG JJ, HH KK, FF PP
Max.
LTA-GTA
Switch Element
Temp.
3. Deadbands for LTA and GTA are adjustable between the val­ues shown.
4. Deadbands for LTS, GTS, LTD and GTDmodels are fixed within the range of values shown. Manufacturing and parts variances result in variation from one unit to another.
5. Not available with 2
(3)
LTS-GTS
3
4˝stem
(4)
LTD-GTD
6. Available with remote mount thermal system only.
Switches calibrated at 70°F ambient reference.
(2)
(4)
BULLETIN SWGL-1-T
All specifications are subject to chang e without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2014 11/14
Ashcroft Inc., 250 Ea st Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.co m • www.ashcroft.com
Page 3
G & L-Series Multifunction Temperature Switches
G- and L-SERIES TEMPERATURE SWITCHES ORDERING INFORMATION
1 2 3 4 5 6 7 8
G T A N 4 H 0 5 A 7
1
– FUNCTION
GTS/LTS - Temperature Control, Single Setpoint, Fixed
G
G
2 – ENCLOSURE
N4 - NEMA 4, 4X
Deadband
TA/LTA - Temperature Control, Single Setpoint,
Adjustable Deadband
TD/LTD - Temperature Control, Two Independently
A
djustable Setpoints, Fixed Deadband
L-Series: Epoxy Coated, Die Cast
Aluminum, IP66
G-Series: 316 SS IP65
030
3
– SWITCH ELEMENTS FOR GTA/LTA
CONTROLS
Description/Maximum Electrical Ratings
Code UL/CSA listed
10A,125/250 Vac H General purpose 1/2A, 125 Vdc
1/4A, 250 Vdc
Hermetically sealed J switch, general 11A, 125/250 Vac
purpose 5A, 30 Vdc
SWITCH ELEMENTS FOR FOR GTD/LTD & GTS/LTS CONTROLS
Code Single Dual
(4)
K
KK Narrow deadband 15A, 125/250 Vac
(4)
FF Sealed environment 15A, 125/250 Vac
F
15A, 125/250/480 Vac
(5)
G
GG General purpose 1/2A, 125 Vdc
1/4A, 250 Vdc
Hermetically sealed
(3)
P
PP switch, narrow 5A, 125/250 Vac
deadband
Hermetically sealed
J JJ switch, general 11A,125/250 Vac
purpose 5A, 30 Vdc
W WW Ammonia service 15A, 125/250 Vac
C CC Heavy duty ac 22A, 125/250 Vac
(8)
Heavy duty dc 10A, 125 Vac or dc
S
Y YY High temp. 300°F 15A, 125/250 Vac
(7)
U
UU
increasing
(7)
E
EE
decreasing Hermetically sealed
L LL switch, gold contacts 5A, 125/250 Vac
M MM Low level, gold 1A, 125/250 Vac
contacts
4 – LINE LENGTH
Order Code Line Length ft Style
00 Not Applicable Rigid
05 5 Capillary 10 10 with 15 15 Armor 20 20 (Std.) 25 25
Switch elements UL/CSA listed
proof
Manual reset trip on
(7)
Manual reset trip on
(7)
(4)
DIRECT MOUNT
REMOTE MOUNT
1
8 HP, 125 Vac or dc
15A, 125/250 Vac
15A, 125/250 Vac
X N H
150°-260°F
5 – THERMAL SYSTEM SELECTION
L
INE MATERIAL
Direct Mount
Order Code Description
No entry required for
direct mount
Remote Mount
A7 SS Armor (Std.)
6 – BULB LENGTH SELECTION
Minimum Order Code “S” Dimension Thermowell
“U” Dimension
027 23/4˝ — 040 4˝ 2
060 6˝ 4 090 9˝ 7 120 12˝ 101⁄
030 3˝ 2
DIRECT MOUNT
REMOTE MOUNT
(5)
7 – G- & L-SERIES TEMP. SWITCH OPTIONS
Code Description
XCH Chained Cover
XFP Fungus Proof
XFS Factory Adjusted Setpoints
XJL 3⁄
XK3 Terminal Blocks
XNH Tagging Stainless Steel
XPK Pilot Lights, L-Series
XPM
(6)
X2C
DPDT with Single Setpoint Adjustment
XBX 69 Series Bushing for Thermowell Systems,
1
4˝ to
2˝ Reducing Bushing
3
4˝ Sealed Conduit Connection with 16˝
Lead Wires
1
2 Male NPT
8 – STANDARD TEMPERATURE RANGE
See page 2
NOTES:
1. Estimated dc rating, 2.5A, 28 Vdc (not UL listed)
2. Estimated dc rating, 0.4A, 120 Vdc (not UL listed)
3. Not UL listed at 480 Vac
4. Additional line lengths available, call factory.
5. Additional bulb lengths available, call factory.
6. Available with LTS and GTS models only.
7. Available on L-Series only.
8. Not available with dual setpoints.
1
2˝
1
2˝
1
2˝
2˝
1
2˝
BULLETIN SWGL-1-T
All specifications are subject to chang e without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2014 11/14
Ashcroft Inc., 250 Ea st Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.co m • www.ashcroft.com
Page 4
2.64 (67)
4.78
(121)
0.25 (6)
2.26 (57)
2.50 (64)
5.68
(144)
1.60 (41)
2.10 (53)
0.38 (10)
1.31 (33)
3.38 (86)
Ø 0.37
(9)
4.17 (106)
1.86 (47)
“S”
2.31
ACTIVE BULB
LENGTH
(59)
7/8 HEX
1/2 NPT FEMALE
3/4 NPT FEMALE
CONDUIT ADAPTER
2.64 (67)
4.78 (121)
0.25 (6)
2.26 (57)
2.50 (64)
2.31
ACTIVE BLUE
LENGTH
(59)
2.50 (64)
“L”
Ø 0.37
(9)
3.00 (76)
2.10 (53)
1.60 (41)
5.68
(144)
4.17 (106)
0.38 (10)
1.86 (47)
3/4 NPT FEMALE
C
ONDUIT ADAPTER
Dimensions – G-Series
(
105)
2
.25
(57)
2
.50
(
64)
0.25 (6)
3
.47
(88)
2
.06
(52)
1.21 (
31)
0.38 (10)
3.94
(
100)
1.31 (
33)
S”
Ø 0.37
(9)
2
.31
A
CTIVE BULB
LENGTH
(
59)
3
.26
(
83)
6.09
(
155)
3
/4 NPT
7/8 HEX
1/2 NPT MALE
4
.12
2.31
A
CTIVE BULB
LENGTH
(59)
2
.06
(
52)
0
.38
(10)
3
.94
(
100)
3
.26
(83)
“L”
3.00 (76)
2.50 (
64)
Ø 0.37
(
9)
1.21 (31)
6
.09
(
155)
3
/4 NPT
4
.12
(
105)
0
.25 (6)
2.25 (57)
2.50 (64)
G & L-Series Multifunction Temperature Switches
Temperature Switch – Direct Mount
Dimensions – L-Series
Temperature Switch – Direct Mount
“S” DIMENSION
IN) (MM)
(
2.75 70 4 102
152
6
229
9
12 305
Temperature Switch – Remote Mount
Temperature Switch – Remote Mount
BULLETIN SWGL-1-T
All specifications are subject to chang e without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2014 11/14
Ashcroft Inc., 250 Ea st Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.co m • www.ashcroft.com
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